I'm 21 years old, was in class two days ago... saw a spider under my desk crawling into the aisle. I was bored so before it got far away, I leaned back in my chair, slid my foot into the aisle, and crunched the little guy as inconspicuously as I could. I tilted my foot on its side to jokingly show the flattened little guy to my friend sitting across, who sort of snickered when we saw that he was stuck to some mud/grass on my running shoe and half alive. As I was doing this I wondered what motivated the bug to get so close. Now, I've been stepping on bugs my whole life. Why crawl next to a giant sneaker unless you were looking to be crushed! Seems hard not to notice that a huge white rubber thing which smashes might be dangerous.. hah. Why do bugs act in that way?